Let's divide 640486 by 87
We're looking to find how many times 87 goes into 640486.

Advancing to step 1:
If we divide 6 by 87, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 87

Step 2:
87 goes into 64 0 times with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Take the next digit (0) from the dividend and append it to 64, then repeat: 640 / 87

Advancing to step 3:
If we divide 640 by 87, we get 7 and a remainder of 31.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 609 from 640, we get 31.
Fetch the next digit (4) from the dividend, attach it to 31 and continue: 314 / 87

Let's proceed to step 4:
The number 87 fits into 314 3 times, leaving a remainder of 53.
The next digit of our result is 3. 
Result so far: 73.0
If we subtract 261 from 314, we get 53.
Take the next digit (8) from the dividend and append it to 53, then repeat: 538 / 87

Step 5:
If we divide 538 by 87, we get 6 and a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 736.0
The remainder is 16 after subtracting 522 from 538.
Grab the next digit (6) from the dividend, add it to 16, then carry on: 166 / 87

Moving on to step 6:
87 goes into 166 1 times with a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 7361.0
Subtracting 87 from 166 leaves us with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 7:
87 goes into 790 9 times with a remainder of 7.
The next digit of our result is 9. 
Result so far: 7361.9
Subtracting 783 from 790 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 8:
87 can be fit into 70 0 times, resulting in a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 7361.9
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 9:
If we divide 700 by 87, we get 8 and a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 7361.908
The remainder is 4 after subtracting 696 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 10:
40 divided by 87 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 7361.908
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
When dividing 400 by 87, we get 4 with a remainder of 52.
Write down 4 as next digit of the result. 
Result so far: 7361.90804
Deduct 348 from 400 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 12:
87 can be fit into 520 5 times, resulting in a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 7361.908045
Deduct 435 from 520 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 13:
When dividing 850 by 87, we get 9 with a remainder of 67.
Record the quotient 9 as the next digit in the result. 
Result so far: 7361.9080459
If we subtract 783 from 850, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 14:
670 divided by 87 is 7 with a remainder of 61.
The next digit of our result is 7. 
Result so far: 7361.90804597
Subtracting 609 from 670 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

The quotient of the division is 7361.90804597, and the remainder is 6.1e-08.